Ezek 36:25-27 says "And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them." In other words they will not sin any longer.
Ezek 37:24 repeats the notion that the statutes shall be kept... "And David my servant shall be king over them; and they all shall have one shepherd: they shall also walk in my judgments, and observe my statutes, and do them"
There is no such thing. Nowhere in the OT does it say that the messiah shall come once, die and return a second time. Zeph 3:13,15 are clearly predicting the end of sin when the messiah arrives.
Zeph 3:13 The remnant of Israel shall not do iniquity, nor speak lies; neither shall a deceitful tongue be found in their mouth: for they shall feed and lie down, and none shall make them afraid.
Zeph 3:15 The LORD hath taken away thy judgments, he hath cast out thine enemy: the king of Israel, even the LORD, is in the midst of thee: thou shalt not see evil any more.
It says all his people will be righteous. No sin. Get it?
Isa 60:21 Thy people also shall be all righteous: they shall inherit the land for ever, the branch of my planting, the work of my hands, that I may be glorified.
AL